This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
The release 6.9 RC2 hangs when trying to open a Maven OSGi bundle project. It just sits there, telling it's opening the project. Works with RC1 though. I'm including the screenshot, threaddump and project. Hope this helps to find the issue.
Created attachment 99761 [details] Netbeans trying to open the project
Created attachment 99762 [details] Thread dump of Netbeans opening the project. The "opening projects" thread is stuck.
Created attachment 99763 [details] The project it's trying to open
After 6 minutes it concludes the project is malformed. Restarting Netbeans shows the project but causes it to get stuck too.
Created attachment 99764 [details] Log after restarting netbeans
Created attachment 99765 [details] Log file when opening the project for the first time
Created attachment 99766 [details] Thread dump while netbeans tries to open the malformed project
Jaro, please help reproducing.
Well, I'm unable to reproduce issue on my computer with RC2. I used OSGi bundle project created with tutorial(http://wiki.netbeans.org/Maven_Doc_OSGi_Quickstart) and started IDE with clean userdir. I've checked the log and it seems to me that this could be caused by using org.apache.maven.wagon dependency (See issue http://netbeans.org/bugzilla/show_bug.cgi?id=177788) and in this case we can do nothing until upgrade to maven3,as Milos mentioned there. Is it also possible,that VisualVM 1.2.2 tool I see opened on screenshot could somehow interfere with the IDE processes. Reporter,could you please check the scenario with only IDE opened?
Email I sent today ================== I guess with "Reporter" you mean me. :-) I just managed to open the project by: * Wiping the user directory <home>/.netbeans/6.9rc2 * Starting netbeans rc2 * Opening project It took some time but in the end it I could clean & build and now it's okay. The only thing I can think of being different is that I imported the settings from 6.9beta. There I've chosen a different maven (2.2.1) and location for the repository. Also, the project I tried to open was different of course. What I included into the bug attachments is the project that is blocking rc2. I made it with rc1 originally. That might be a cause too.
I've got a comparable issue with an EJB maven project. But this time I can cause it consistently. 1) Clear userdir of rc2 2) Start NB 3) Select in Maven options a Maven 2.2.1 installation. 4) Create project "Maven EJB" 5) Fill in details and press "Finish" ==> Causes the exception. This exception isn't thrown when using the embedded Maven 3. So here you are. NetBeans: Executing '/u01/app/apache-maven-2.2.1/bin/mvn -DarchetypeVersion=1.0.2 -Darchetype.interactive=false -DgroupId=org.javacraft -DarchetypeArtifactId=ejb-javaee6 -Dversion=1.0-SNAPSHOT -DarchetypeGroupId=org.codehaus.mojo.archetypes -Dbasedir=/home/jan/NetBeansProjects -Dpackage=org.javacraft.kronos -DartifactId=kronos -Dnetbeans.execution=true -Dmaven.repo.local=/u01/m2repo --batch-mode org.apache.maven.plugins:maven-archetype-plugin:2.0-alpha-4:generate' NetBeans: JAVA_HOME=/u01/app/jdk Exception in thread "main" java.lang.NoClassDefFoundError: org/codehaus/classworlds/Launcher Caused by: java.lang.ClassNotFoundException: org.codehaus.classworlds.Launcher at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) Could not find the main class: org.codehaus.classworlds.Launcher. Program will exit.
I confirm the cause: Everything works fine with the embedded Maven. Also after importing all my settings of a previous installation. As long as I'm not using the local 2.2.1 installation.
artisan, is your local maven installed correctly? Please try to run "mvn -v" from command line, see http://0xf00.org/blog/0xf00/entry/maven_error_java_lang_noclassdeffounderror
Indeed it looks like maven installation problem, see following link: http://www.permeance.com.au/web/terry.mueller/home/-/blogs/maven2-reports-java-lang-noclassdeffounderror:-org-codehaus-classworlds-launcher So I'm lowering to P3 and awaiting comment from artisan.
*shame* You are right. Somebody defined the $M2_HOME variable without caring to check whether it points to an existing directory. Or a valid Maven installation for that matter. Even if in Netbeans you've specified explicitly the location of the maven to be used. I'm really sorry. Because I could open the project as is in RC1 I was assuming this was related to RC2.
No problem, glad to hear that issue is solved.